Sunday, however, the maybe-couple avoided being photographed together but met up at the party later in the night and looked happy as ever, meeting up once they were both inside.
Meanwhile, Bradley Cooper looking dapper as ever, seemed to have the ear of the man of the night Harvey Weinsten. Harvey was also seen talking with Jessica Alba and Lindsay Lohan, among other guests. Kim Kardashian, stunning as usual, also mingled with Lohan, who held court in the patio area.
Madonna was one of the first guests to arrive, saying her hellos and then being one of the first to leave as well.
Golden Globe winners Meryl Streep and Michelle Williams also came by the party with their statues in hand, and were swarmed by guests inside offering their congrats. True Blood hunk Alexander Skarsgard was also swarmed by ladies, although he seemed to be captivated by a particular brunette whom he was later seen arriving with at Chateau Marmont.
Other stars rounding out the party: Leonardo Dicaprio, Viola Davis, Rosie Huntington-Whiteley, Tilda Swinton, Rob Lowe, and Mark Salling.